Breakdown of Он не мог говорить от смеха.
не
not
он
he / it (for a masculine noun) / it (for a neuter noun)
говорить
to speak, to talk
мочь
to be able to
от
from
смех
laughter
Questions & Answers about Он не мог говорить от смеха.
Why do we use от here instead of из to say "from"?
This is exactly what this lesson is about! In Russian, от + Genitive is used for involuntary physical or emotional reactions that overpower you, like laughter (от смеха), cold, or pain. If the action was driven by a conscious, deliberate motive, like acting out of pity or curiosity, you would use из instead.
What case is смеха and what is its base form?
Смеха is in the Genitive case, which is always required after the preposition от. The dictionary form of the noun is смех (laughter).
Why is the imperfective verb говорить used here rather than the perfective сказать?
Говорить focuses on the ongoing process or physical ability to speak, which is exactly what he lost while laughing. The perfective сказать focuses on completing a specific message (to say a specific thing). Since he physically couldn't form words at all, the imperfective is the natural choice.
How does the past tense of мочь (to be able to) work in this sentence?
The verb мочь has irregular past tense forms. Because the subject is он (he), we use the masculine past tense form мог. As a quick refresher, the other past tense forms are могла for feminine, могло for neuter, and могли for plural.
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